public MaterialConstituentCache()
{
MaterialConsituentInfoComparer comparer = new MaterialConsituentInfoComparer();
if (m_MaterialConstDictionary == null)
{
m_MaterialConstDictionary = new Dictionary <MaterialConstituentInfo, IFCAnyHandle>(comparer);
}
}
/// <summary>
/// Creates an association between a list of material handles and an instance handle, and create the relevant IfcShapeAspect
/// </summary>
/// <param name="exporterIFC">The ExporterIFC object.</param>
/// <param name="element">The element</param>
/// <param name="instanceHandle">The IFC instance handle.</param>
/// <param name="representationItemInfoSet">RepresentationItem info set</param>
public static void CreateMaterialAssociationWithShapeAspect(ExporterIFC exporterIFC, Element element, IFCAnyHandle instanceHandle, HashSet <Tuple <MaterialConstituentInfo, IFCAnyHandle> > representationItemInfoSet)
{
Document document = ExporterCacheManager.Document;
// Create material association if any.
bool createConstituentSet = (!ExporterCacheManager.ExportOptionsCache.ExportAsOlderThanIFC4);
IList <IFCAnyHandle> materials = createConstituentSet ? null : new List <IFCAnyHandle>();
ISet <ElementId> alreadySeenMaterialIds = createConstituentSet ? new HashSet <ElementId>() : null;
IFCAnyHandle matHnd = null;
foreach (Tuple <MaterialConstituentInfo, IFCAnyHandle> repItemInfo in representationItemInfoSet)
{
matHnd = GetOrCreateMaterialHandle(exporterIFC, repItemInfo.Item1.MaterialId);
if (IFCAnyHandleUtil.IsNullOrHasNoValue(matHnd))
{
continue;
}
// Strictly speaking, we only need at most one material if createConstituentSet is true.
if (createConstituentSet)
{
alreadySeenMaterialIds.Add(repItemInfo.Item1.MaterialId);
}
else
{
materials.Add(matHnd);
}
}
int numMaterials = createConstituentSet ? alreadySeenMaterialIds.Count : materials.Count;
if (numMaterials == 0)
{
return;
}
// If there is only one material, we will associate the one material directly.
// matHnd above is guaranteed to have a valid value if numMaterials > 0.
if (numMaterials == 1)
{
ExporterCacheManager.MaterialRelationsCache.Add(matHnd, instanceHandle);
return;
}
IFCFile file = exporterIFC.GetFile();
IFCAnyHandle materialContainerHnd = null;
if (createConstituentSet)
{
ExporterCacheManager.MaterialConstituentCache.Reset();
IDictionary <IFCAnyHandle, IFCAnyHandle> mapRepItemToItemDict = new Dictionary <IFCAnyHandle, IFCAnyHandle>();
string repType = null;
IFCAnyHandle prodRep = null;
if (IFCAnyHandleUtil.IsSubTypeOf(instanceHandle, IFCEntityType.IfcProduct))
{
prodRep = IFCAnyHandleUtil.GetRepresentation(instanceHandle);
IList <IFCAnyHandle> reps = IFCAnyHandleUtil.GetRepresentations(prodRep);
// Get RepresentationType for shapeAspect in "Body" representation
foreach (IFCAnyHandle rep in reps)
{
if (IFCAnyHandleUtil.GetRepresentationIdentifier(rep).Equals("Body"))
{
repType = IFCAnyHandleUtil.GetRepresentationType(rep);
if (repType.Equals("MappedRepresentation", StringComparison.InvariantCultureIgnoreCase))
{
HashSet <IFCAnyHandle> items = IFCAnyHandleUtil.GetItems(rep);
foreach (IFCAnyHandle item in items)
{
IFCAnyHandle mappingSource = IFCAnyHandleUtil.GetInstanceAttribute(item, "MappingSource");
IFCAnyHandle mappingSourceRep = IFCAnyHandleUtil.GetInstanceAttribute(mappingSource, "MappedRepresentation");
repType = IFCAnyHandleUtil.GetRepresentationType(mappingSourceRep);
}
}
break;
}
}
}
else if (IFCAnyHandleUtil.IsSubTypeOf(instanceHandle, IFCEntityType.IfcTypeProduct))
{
IList <IFCAnyHandle> repMaps = IFCAnyHandleUtil.GetAggregateInstanceAttribute <List <IFCAnyHandle> >(instanceHandle, "RepresentationMaps");
if (repMaps != null && repMaps.Count > 0)
{
// Will use representation maps for shapeAspect if there is "Body"
foreach (IFCAnyHandle repMap in repMaps)
{
IFCAnyHandle rep = IFCAnyHandleUtil.GetInstanceAttribute(repMap, "MappedRepresentation");
if (IFCAnyHandleUtil.GetRepresentationIdentifier(rep).Equals("Body"))
{
prodRep = repMap;
repType = IFCAnyHandleUtil.GetRepresentationType(rep);
break;
}
}
}
}
// Collect ALL representationItems that have the same Category and MaterialId into one Set
MaterialConsituentInfoComparer comparer = new MaterialConsituentInfoComparer();
IDictionary <MaterialConstituentInfo, HashSet <IFCAnyHandle> > repItemInfoGroup = new Dictionary <MaterialConstituentInfo, HashSet <IFCAnyHandle> >(comparer);
foreach (Tuple <MaterialConstituentInfo, IFCAnyHandle> repItemInfo in representationItemInfoSet)
{
if (!repItemInfoGroup.ContainsKey(repItemInfo.Item1))
{
HashSet <IFCAnyHandle> repItemSet = new HashSet <IFCAnyHandle>()
{
repItemInfo.Item2
};
repItemInfoGroup.Add(repItemInfo.Item1, repItemSet);
}
else
{
repItemInfoGroup[repItemInfo.Item1].Add(repItemInfo.Item2);
}
}
HashSet <IFCAnyHandle> constituentSet = new HashSet <IFCAnyHandle>();
// in IFC4 we will create IfcConstituentSet instead of MaterialList, create the associated IfcConstituent here from IfcMaterial
foreach (KeyValuePair <MaterialConstituentInfo, HashSet <IFCAnyHandle> > repItemInfoSet in repItemInfoGroup)
{
IFCAnyHandle constituentHnd = GetOrCreateMaterialConstituent(exporterIFC, repItemInfoSet.Key);
if (!IFCAnyHandleUtil.IsNullOrHasNoValue(constituentHnd))
{
constituentSet.Add(constituentHnd);
}
RepresentationUtil.CreateRepForShapeAspect(exporterIFC, element, prodRep, repType, repItemInfoSet.Key.ComponentCat, repItemInfoSet.Value);
}
if (constituentSet.Count > 0)
{
materialContainerHnd = GetOrCreateMaterialConstituentSet(file, instanceHandle, constituentSet);
ExporterCacheManager.MaterialRelationsCache.Add(materialContainerHnd, instanceHandle);
}
}
else
{
materialContainerHnd = CreateMaterialList(file, materials);
ExporterCacheManager.MaterialSetUsageCache.Add(materialContainerHnd, instanceHandle);
}
}